Andrew is thinking of a number. 30 more than 10 times a number is 90. Find Andrew's number.

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

What is the probability of rolling a single die greater than 4

Which of these triangle pairs can be mapped to each other using two reflections?